Delivery Error Code:161 [SMTP protocol error 550 5.7.54 SMTP, Unable to relay recipient in non-accepted domain.] - c06413084
During configuration of email printing, jobs are processed correctly, but user does not receive an email reply to notify them of the completed job.
Errors shown in Logs:
The sending account doesn’t have permission to deliver jobs outside the domain. They will likely need to configure an anonymous SMTP relay connector. This article has some good information on that subject and also covers another option to address this error: Using authentication for SMTP connections.